I need help!!!!! Answer me plz

Mathematics

2 answers:

OlgaM077 [116]3 years ago

6 0

Answer:

One solution

Step-by-step explanation:

ohaa [14]3 years ago

3 0

Answer:

Step-by-step explanation:

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Two trains leave the same station at the same time, but are headed in opposite directions. One train travels at 70 mph and the o

Dmitry_Shevchenko [17]

If the required difference is 600 mi, lets start of counting by 10s and multiplying the current number
800-700 = 100
1600-1400 = 200
2400-2100 = 300
3200-2800 = 400
4000-3500 = 500
4800-4200 = 600
if 60 hours pass, they will be 600 miles away from each other.
counting by 10 each time will help with problems like or similar to this.

7 0

3 years ago

Read 2 more answers

I need help plz and thank you

gizmo_the_mogwai [7]

It is D because every time there is a box in the corner it's a right angle and they are always 90°

5 0

3 years ago

Help finding the sum

Mamont248 [21]

It is asking you to find the sum of k^2 - 1 from k=1 to k=4. Since that is only 4 numbers, calculating the sum by hand wouldn’t be that bad.

(1^2 - 1) + (2^2 - 1) + (3^2 - 1) + (4^2 - 1) = 26

The easier way to find the sum is to use a few simple formulas.

When we have a term that is just a constant c, the formula is c*n.

When we have a variable k, the formula is k*n*(n+1)/2.

When we have a squared variable, the formula is k*n*(n+1)*(2n+1)/6.

In this case, we have a squared variable k^2 and a constant of -1.

So plug in n=4 to the formulas:

4*5*9/6 - 1*4 = 26

The answer is 26

5 0

3 years ago

CAN U PLZ HELP THANK YOU

Ulleksa [173]

Answer

second one

Step-by-step explanation:

3 0

3 years ago

Beatrice calculated the slope between two pairs of points.

kumpel [21]

Answer: